Supplemental Information (Tables)

9 Months Ended

Sep. 30, 2011

Supplemental Information [Abstract]

Supplemental Information

	Nine months ended September 30,				Three months ended September 30,
	2011		2010		2011		2010
Income taxes paid	$	88,973	$	101,164	$	31,366	$	34,949
Interest paid		12,937		9,714		785		151
Cash paid for commutations		37,849		0		4,210		0
Comprehensive income		281,737		337,068		116,568		154,317